bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/RIBSupportContextRegistryImpl.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.protocol.bgp.rib.impl;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.cache.CacheBuilder;
  13 import com.google.common.cache.CacheLoader;
  14 import com.google.common.cache.LoadingCache;
  15 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  16 import org.opendaylight.protocol.bgp.rib.impl.spi.CodecsRegistry;
  17 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContext;
  18 import org.opendaylight.protocol.bgp.rib.impl.spi.RIBSupportContextRegistry;
  19 import org.opendaylight.protocol.bgp.rib.spi.RIBExtensionConsumerContext;
  20 import org.opendaylight.protocol.bgp.rib.spi.RIBSupport;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.Tables;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.TablesKey;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.bgp.rib.rev180329.rib.tables.Routes;
  24 import org.opendaylight.yangtools.yang.binding.ChildOf;
  25 import org.opendaylight.yangtools.yang.binding.ChoiceIn;
  26 import org.opendaylight.yangtools.yang.binding.DataObject;
  27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
  28
  29 final class RIBSupportContextRegistryImpl implements RIBSupportContextRegistry {
  30
  31     private final RIBExtensionConsumerContext extensionContext;
  32     private final CodecsRegistry codecs;
  33     private final LoadingCache<RIBSupport<?, ?>, RIBSupportContextImpl> contexts = CacheBuilder.newBuilder()
  34             .build(new CacheLoader<RIBSupport<?, ?>, RIBSupportContextImpl>() {
  35                 @Override
  36                 public RIBSupportContextImpl load(final RIBSupport<?, ?> key) {
  37                     return createRIBSupportContext(key);
  38                 }
  39             });
  40
  41     private RIBSupportContextRegistryImpl(final RIBExtensionConsumerContext extensions, final CodecsRegistry codecs) {
  42         this.extensionContext = requireNonNull(extensions);
  43         this.codecs = requireNonNull(codecs);
  44     }
  45
  46     static RIBSupportContextRegistryImpl create(final RIBExtensionConsumerContext extensions,
  47             final CodecsRegistry codecs) {
  48         return new RIBSupportContextRegistryImpl(extensions, codecs);
  49     }
  50
  51     @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
  52             justification = "https://github.com/spotbugs/spotbugs/issues/811")
  53     private RIBSupportContextImpl createRIBSupportContext(final RIBSupport<?, ?> support) {
  54         return new RIBSupportContextImpl(support, this.codecs);
  55     }
  56
  57     @Override
  58     public <C extends Routes & DataObject & ChoiceIn<Tables>, S extends ChildOf<? super C>>
  59             RIBSupport<C, S> getRIBSupport(final TablesKey key) {
  60         final RIBSupportContext ribSupport = getRIBSupportContext(key);
  61         return ribSupport == null ? null : ribSupport.getRibSupport();
  62     }
  63
  64     @Override
  65     public RIBSupportContext getRIBSupportContext(final TablesKey key) {
  66         final RIBSupport<?, ?> ribSupport = this.extensionContext.getRIBSupport(key);
  67         return ribSupport == null ? null : this.contexts.getUnchecked(ribSupport);
  68     }
  69
  70     @Override
  71     public RIBSupportContext getRIBSupportContext(final NodeIdentifierWithPredicates key) {
  72         final RIBSupport<?, ?> ribSupport = this.extensionContext.getRIBSupport(key);
  73         return ribSupport == null ? null : this.contexts.getUnchecked(ribSupport);
  74     }
  75 }